Vapor-burner



E Z l.rllllllllllllllllllllllllllllllllllllllll Patented Aug. 18, 189.1l

(No'Model.)

T.- L. & T. J. STURTEVANT. VAPOR BURNER.

YM: ou rerzns :o novo-Lw wasn man u c UNITED STATES PATENT OEEICE.

THOMAS L. sTUETEvANT AND THOMAS J. STUETEVANT, OE EEAMINGHAM,

MASSACHUSETTS.

VAPOR-BURNER.

SPECIFICATION forming part of Letters Patent N o. 457,801, dated August18, 1891.

Application tiled March 10, 1890.

To all whom t may concern:

1 Beit known that we, THOMAS L. STUETE- VANT and THOMAS J. STURTEVANT,citizens of the United States, residing atFramingham, 1n the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Vapor-Burners; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which form a part of thisspecification.

This invention relates to improvements in vapor-burners, so called, suchas employ liquid fuel either alone in the form of Spray or as vaporcommingled with 'a forced supply of superheated air or steam.

The said invention consists in the construction and combination of partshereinafter set forth and claimed.

The drawings represent in Figure 1 a sectional elevation Of'a burnercontaining our invention. Fig. 2 shows the same connected with a waterand fuel supply. Fig. 3 is an end view of the burner.

In connection with our improved arrangement, as above premised, forrendering the supply of oil dependent upon the existence of a flame fedthereby we have adopted avapor-burner of the following construction, andshown as an entirety at A. This burner is made up of the followingparts: The'member B is a hollow casting or tube, preferably cylindricalin cross-section, closed at one end by a hollow plug C, connecting withthe steam-Supply pipe a.. Said plug terminates in a nozzle b, reduced ortapered as shown. Since this nozzle extends centrally of the tube B, anannular chamber 'c is formed, which connects with the oil-supply by thepipe d. The oil contained within the tank or reservoir D is set belowthe burner. Hence none can flow except it is lifted by suction. When itdoes liow, this chamber serves to act as a temporary storage-place,where the liquid fuel is heated by the nozzle prior to its escape fromthe burner when commingled Serial No. 343,293. (No model.)

'with steam or air, or, with both steam and air, it is fed to the flame.The open end of the tubular casting B is equipped with an adjustable capE, termed the regulating-` cap. The latter is formed with aninwardly-projecting annular flange' or lip e, by means ot which acentral discharge-Orifice f is produced. The inside face of this flangeis preferably at right angles or transversely disposed with relation tothe longitudinal 6o bore of the spray-nozzle, while the orifice f is inalignment with said nozzle. As a consequence, when the steam isdischarged from the nozzle a suction is created and the oil so suppliedfills the chamber c and seeks an outlet in the direction of the escapingsteam. The cap E, however, yby vmeans of the ange e directs said oilacross the path of the steam with such effectas to thoroughly comminglethe steam and oil and direct them, 7o together with a small amount ofair, into the liame. The intensity of the ame is controlled by theposition of the regulating-cap,

which is united in the present instance by scrowthreads with the end ofthe tube B, and 75 can thus be moved to cause the flange e to approachor recede from the extremity of the spray-nozzle. The more closely itapproaches the latter the smaller the amount of oil permitted to escape.One advantage in the con- 8o struction of this kindof vapor-b urneristhat oil passages or apertures are large, and hence not liable tobecome obstructed, and crudepetroleum or any other kind of oil can beused with equal facility.

In connection with this burner we employ an exterior or inclosingcylinder or casing F. The latter Serves not only as a protection to theburner proper, but stimulates a current of air to dow in the directionof the ame, 9o and combustion is more complete. In some instances thisburner can be used without the casing F.

With our improvements is combined the arrangement by which the supply ofoil is rendered automatic-in other words,'ceases with the extinction ofthe flame, and, vice versa, commences with the lighting of the flame.This we effect as follows: Communicating with the spray-nozzle by afeedpipe h, Suproo plied with a valve, is a Water system under pressure.-Within the cylinder or case F is placed a snperheating-coil z', whichis located in front of the burner A or in some position to bef'heated byor exposed to the llame. Said coil may be a part of the pipe h; but inany event the supply of water or steam is to pass from the tank G, Fig.2, through the pipe h and coil fi to the spray-nozzle, in its passagebeing superheated.

To start this burner, it is only necessary to supply heat from someoutside source, as from Waste or any light combustible material byburning such substances Within the case F or directly about thesuperheating pipe or coil t'. When this is properly heated, a smallamount of water is then permitted by means of the valve in the pipe h toflow into the superheater coil, where steam is instantly formed. Saidsteam escapes under pressure when a suction of the oil is produced, andthe latter is commingled therewith and delivered exteriorly of the cap,together with the escaping steam, Where they become ignited or maybeignited. From this time the burner is self-operating. The steamproduced from water derived from the tank G maintains the suction, andfuel is fed continuously so long as the llame exists. As beforepremised, the size and power of the flame are controlled by theregulating-cap E and the pressure of the Water, which is governed by theheight of the tank above the burner, or the pressure of the Water-Works.

It is evident that this burner can be used by means of steam suppliedfrom a boiler or any other source or by compressed air, superheatingbeing efected by our arrangements, and still be made exceedinglyeifective. In such cases, however, this objection exists:

Should the fire go ont, the steam or air supply continuing, oil wouldstill be supplied, and too much might escape into the furnace before anew tire could be started. Vhen it started the great llame evolved mightbe dangerous.

What We claim isl. In combination, a tube B, closed at one end, and anozzle b, extending longitudinally therethrough, the annular oil-chamberc being formed by said tube and nozzle, and the adjustableregulating-cap E, the said cap being providedwith an annularinwardly-extending flange e at right angles to the line of discharge, acentral perforation f, and a concave outer face, substantially asspecified.

2. In combination, a tube B, closed at one end, a nozzle b, extendinglongitudinally therethrough, the annular oil-chamber c being formed bythe said tube and nozzle, the coil z', arrangedin the line of dischargeof the said nozzle, the pipe h, connecting the said coil with the saidnozzle, and the adjustable regulating-cap E, provided with an annularinwardly-extending iiange e at right angles to the line of discharge, acentral perforation f, and a concave outer face, substantially asspecified.

In testimony whereof we affix our signatures in presence of witnesses.

THOMAS L. STURTEVANT. THOMAS J. STURTEVANT.

IVitnesses to signature of Thomas L. Sturtevant:

EDITH T. WEEKS,

M. HEAToN.

lVitnesses to signature of Thomas J. Sturte vant:

H. E. LODGE, JOHN A. DQUGHERTY.

